export type Contact = {
  id: number;
  nickname?: string;
  avatar?: string;
  unread: number;
  lastSendTime: number;
  lastContent: string;
  index?: number;
};
export type Message = {
  id: string;
  type: string;
  sendTime: number;
  content: string;
  status: string;
  toUser: Contact;
  formUser: Contact;
};
